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Cephalosporin antibiotics are used prophylactically in cardiothoracic surgery to prevent postoperative infection. In 30 patients undergoing primary elective coronary artery bypass grafting, the whole blood coagulation system was prospectively evaluated before, and 10 and 30 minutes after administration of 1 g of cephapirin (Cefadyl, Bristol Laboratory, Evansville, IN). All patients had normal preoperative coagulation studies and had not received anticoagulant or antiplatelet therapy within 7 days of surgery. At 10 minutes after cephapirin administration, 23 of 30 patients had a significant change in all phases of whole blood coagulation as monitored by thromboelastography (TEG). Thirty minutes after cephapirin administration there was no statistical difference compared with the baseline TEG. It is concluded that cephapirin can cause a significant but transient change in the viscoelastic properties of blood. Coagulation parameters of the TEG should be measured prior to cephapirin administration to prevent errors in establishing baseline values prior to cardiopulmonary bypass.
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☆This is a US government work. There are no restrictions on its use. 1053-0770/93!0704-0008$00.00/0
© 1993 Published by Elsevier Inc.